Global Patent Index - EP 1111600 A4

EP 1111600 A4 20041222 - INFORMATION-RECORDING MEDIUM AND INFORMATION REPRODUCTION APPARATUS

Title (en)

INFORMATION-RECORDING MEDIUM AND INFORMATION REPRODUCTION APPARATUS

Title (de)

INFORMATIONSAUFZEICHNUNGSMEDIUM UND INFORMATIONSWIEDERGABEGERÄT

Title (fr)

SUPPORT D'ENREGISTREMENT DE DONNEES ET APPAREIL DE LECTURE DE DONNEES

Publication

EP 1111600 A4 20041222 (EN)

Application

EP 99926940 A 19990705

Priority

  • JP 9903625 W 19990705
  • JP 19007498 A 19980706

Abstract (en)

[origin: EP1111600A1] An information recording medium and an information reproduction apparatus that can substantially increase the capacity for recorded information. A preformat pit array 202 exists on the extension of the boundary between a concave portion 103 and a convex portion 104 and includes information on both sectors across the boundary. An adjustment pit array 201 precedes the preformat pit array 202 in the advancing direction of light that reproduces information recorded on an information recording medium. The information reproduction apparatus adjusts the amplifying rate so that the level of a signal from the adjustment pit array 201 becomes equal to a reference level required to reproduce the information correctly. The apparatus then uses this amplifying rate to correctly reproduce the information in the preformat pit array 202. <IMAGE>

IPC 1-7

G11B 7/007; G11B 7/00; G11B 7/24

IPC 8 full level

G11B 7/00 (2006.01); G11B 7/005 (2006.01); G11B 7/007 (2006.01); G11B 7/24 (2006.01); G11B 7/2405 (2013.01); G11B 7/24091 (2013.01); G11B 20/12 (2006.01)

CPC (source: EP KR US)

G11B 7/005 (2013.01 - EP KR US); G11B 7/00718 (2013.01 - EP KR US); G11B 7/00745 (2013.01 - EP KR US); G11B 2007/00727 (2013.01 - KR)

Citation (search report)

  • [YA] EP 0752701 A2 19970108 - MATSUSHITA ELECTRIC IND CO LTD [JP]
  • [YA] PATENT ABSTRACTS OF JAPAN vol. 0080, no. 01 (P - 246) 6 January 1984 (1984-01-06)
  • See references of WO 0002197A1

Designated contracting state (EPC)

BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

DOCDB simple family (publication)

EP 1111600 A1 20010627; EP 1111600 A4 20041222; EP 1111600 B1 20070214; JP 2000021026 A 20000121; JP 3173465 B2 20010604; KR 20010053392 A 20010625; US 6807143 B1 20041019; WO 0002197 A1 20000113

DOCDB simple family (application)

EP 99926940 A 19990705; JP 19007498 A 19980706; JP 9903625 W 19990705; KR 20017000121 A 20010105; US 52970600 A 20000417